Blue-winged Olives
Baetis
Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
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This specimen keys pretty easily to Onocosmoecus, and it closely resembles a specimen from Alaska which caddis expert Dave Ruiter recognized as this genus. As with that specimen, the only species in the genus documented in this area is Onocosmoecus unicolor, but Dave suggested for that specimen that there might be multiple not-yet-distinguished species under the unicolor umbrella and it would be best to stick with the genus-level ID. I'm doing the same for this one.
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GONZO on Oct 8, 2006October 8th, 2006, 2:56 pm EDT
This is a member of the Taeniopterygidae--the first and second tarsal segments are about equal in length.
Troutnut on Oct 8, 2006October 8th, 2006, 4:54 pm EDT
Thanks for catching the mistake. I'm not sure why I called it Capniidae -- probably the size. I think it was very small, but it's kind of hard to remember that many bugs ago.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
Troutnut and salmonid ecologist